Measuring apparatus.



J. W GAMBLE. MEASURING APPARATUS.

APPLIOATION.IILED FEB.20, 1913.

Patented M18, 1913 ym z 405M A TTORNE Y Wi l} ii 1 mm JOSEPH W. GAll iBL-E, UT-: EH'ILAIBELPIEEIA, EENNSYLVANIA, ASSIGNOR T0 JOSEPH S. 'KGVEBING WI'IAETQII, WILLTLAIJI S. HAELOW'ELL, AND J' JEN C. JQNES, ALL-0F lHILADELPHIA LEIEYLJ'NSYLVANIA, AS IiFIItfIl L Oil? HARRISON SAFETY BOILER- WORKS,

GE PHILADELPEil'r-fi, PENIEJSYLVANHL fipecificatiou of Letters Patent.

rlruesurcrus AE'PLARATUS.

ll o'teniedliovu 18, 1913.

nooliesion filed February 20,1913. Serial 1%. issues.

To ail whom z'z may concern Be 1h known that L-Josuri-r Wt GAMBLE,

a citizen oi the United States of America,

residing in the city zillilCOllIlhYl oi Philadelphia, in the Ste-to of Pennsylvania more inmeasuring zippers-iris, end. particularly to liquid measuringoppu-rzrt-us of the kind in whioil the'unieunt of liquid passing through a Weir cl'lt-mher is measured: oymeasuring the variations in the accumulation or liquid on the supplyside-ofthe Weir; and the inventionis primarily devised for use in so poratus for measuring the flow oi Writer whichzbas been heated for boiler feed or like purposes. ish such zipparasusiu is frequently desirable to measure the variat on innccumulstiou ofvmter on the supply side of tl1Q"WilI",.IlOhlll the weir chamber hutin o-supplemeutal measuring tool; connectedthereto; butlocated some distance therefrom, Where it is more convenient to place the recordingor indicating mechanism or the actuating means therefor. With such apparatus, if the temperature of the ater in. the measuring te iuk varies appreciably fromjthc temperziturc'of the Water flowing over the Weir, there results a diiiereuce in density of the water in the Weir chamber and measuring tank Which interferes With the accuracy of the measurements obtained.

Theobject of my present invention is provide means for maintaining the Water in the measuring tank oi; o tei'uperuture which is the some as or closely approximates the temperature of the liquid flowing; over the weir This I accomplish by providing means for. obtaining a continuous circulation through the measuring tool; of the liquid flowing over the Weir, or in some cases of the steam or vapor filling the upper portion ofthc Weir chamber,

The various features iuiwclty which characterize my invention are pointed out with particularity in the claims annexed to and forming u port of this specification. For better understanding of the invenlion however, and of the advantages possessed by it, reference should be had to she accompanying drawings and descriptive matter in which I have illustrated and described various forms in which my invention may be embodied.

or theidrswings: Figure l is sectional elevation of one form of apparatus embodying my invention; and. Figs. 2' and S are views ouch token similarly to Fig. 1, and

euclr showing dillerent modification.

In the drawings and referring first to Fig. 1, A represents a Weir chamber divided into inlet and outlet; compartments by u weir A. in the form showiyztlthough this is not essential to the present,- invention, the Weir chamber is directly connected to a Water heater B of the open feed Water heater type from which heated Water passes into the inlet compartment of the Weir chamber through-the port 13, C represents the discharge pipe leading from the outlet coinpartment of the Weir chamber to a boiler reed pump or' other device for handling or utilizing the measured Waller. As shown, the upper ends of the heater and weir chambers are connected by a vapor equalizing pipe B2 The rate of flow of the liquid passing over the Weir A measured by mcuns of a flout E Which works in a measuring tank I) and coimccled to and operates the usual indicating, recording, or registering 111echuuis n. located within u casing F. As shown in Fig. l the interior oi the meusur lug tank iornis u measuring compartment connected to the inlet compartment of the weir chamber by the horizontal water pipe iii, and also-by the vapor equalizing pipe Gr located above the muximl'un \Vzl'lGl' level in tho weir chamber and n'icasuring tunic. As shown the ends of the Water pipe ll are conncctcd lo the inlet comportiueut ot the weir chamber and measuring tank at levels slightly below the lowermost levcl of flow over the weir. The pipe connections H and G will obviously serve to equalize the water levels in the inlet compartment of the weir chamber and in the measuring tank so long as the water in the weir chamber and measuring tank are at the same temperature. A difference in temperature of the water in the two places creates. a differencein density which will make the water level in the measllring tank higher or lower than the level of water in the inlet compartment of the weir and measuring tank. With this arrangement, any diflerence in temperature between the water passing through the weir chamber and the water in the. measuring tank tends v to set up a gravity circulation of water through the float chamber, to thereby minimize the difference in temperature.

In the modification shown in Fig. 2, the float chamber DA is provided with a central measuring compartment or chamber D and a surrounding chamber D the chambers D and l.) being in open communication at their upper ends as through ports D The compartment D is connected to the inlet compartment of the weir chamber by a horizontal pipe connection HA, and GA repre sents a vapor equalizing pipe connection between the upper end of the measuring tank DA and the vapor space of the weir chamber. The upper end of the compartment D in this form of my invention receiv 5 hot water through the pipe KA, which is connected at its supply end to a tray L located in the heating chamber B, and the lower end of the compartment D is connected by the pipe IA back to the heater, or as shown, to

the inlet compartment of the weir chamber. With the arrangement .shown in Fig. 2, a portion of the water passing over the usual heating trays B willfall on to the tray L and will flow out of the heater proper to the measuring tank through the pipe KA. The tray L is located appreciably above the maximum height of water level in the weir chamber and this insures, of course, a more energetic circulation through the compartment D of the measuring tank DA than it is possible to obtain through the single compartment of the measuring tank D with the arrangement shown in Fig. 1. The hot, water thus caused to flow through the cornpertinent D tends to maintain a temperature within the measuring compartment D which corresponds very closely to the temperature of the water passing through the weir chamber.

In the modification shown in Fig. 3, the float chamber DB may be similar in construction to the float chamber DA of-Fig, 2; but in Fig. 3 the com artment D is intended to be kept full at steam drawn from the weir chamber through the equalizing connection J. M represents a discharge pipe for water of condensation forming in e chamber D", the dischar e of water of condensation being regulate by a suitable trap, such as the seal trap M showm Preferably, as shown in each construction illustrated, valves J are provided in the various pipe connections leading to the measuring tank to enable the tank to be cut 0d from the weir chamber when this is desired for any reason. v

While inaccordance with the rovisions of the statutes, I have illustra known to me, it will be. apparent to those skilled in the art that changes may be made and de scribed the best forms of my invention now.

in the form of the apparatus disclosed without departing from the spirit of my inven.-]

tion, and that under. some conditions features of myinventlon may be used without a corresponding use of other features.

Having now described my invention, what I- claim as new and desire to secure by Letters Patent, is:

1'. Liquid measuring apparatus comprising in combination, a weir chamber havin an inlet co artment and a weir over whic liquid may ow out of said inlet chamber, a measuring tank having a measuring compartment, conduit means connectin .said compartments for equalizin the liquid levels therein, and other con uit means connecting said weir chamber and tank for equalizing the temperatures therein.

2. Liquid measuring apparatus comprising in combination, a weir chamber having an inlet compartment anda weir over which liquid may flow out of saidinlet chamber, a measuring tank having a measuring compartment, two pipe connections between said compartments one opening to each compartment at levels below those respectively at which the other pipe connection opens thereto and each opening to each compartment at a level below the liquid. level normally prevailing therein.

3. Liquid measuring apparatus comprising in combination, aclosed Weir chamber and a weir therein dividing said weir chamher into inlet and outlet compartments, a closed measuring tank having a measuring compartment, two pipe connections between said inlet compartment and said measuring compartment one opening to each compartment at levels below those respectively at which-the other pipe connection opens thereto, and each opening to each o f said compartments at a level below the hquid level normally prevailing therein, and a vapor equalizing connection between said weir ing therein.

. JOSEPH W. GAMBLE. Witnesses:

ROBERT G. CLIFTON, W. A'rwoon MEHARG. 

